🇹🇭 eSIM plans for Thailand

Starting at $4.21/day*
  • No data caps
  • 7-days valid
  • Fast, reliable connection
  • Skip the roaming bill
  • QR code emailed instantly
Get your unlimited data
How many days
More days, lower daily rate
7
How many eSIMs
More eSIMs, bigger discount
1
Install it now or once you're away. Nothing starts counting until you reach your destination and switch the eSIM on.

* The "as low as" figure is the lowest per-day rate, taken from the longest unlimited data plan on sale here.

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Why buy from us?

Here's how Onetel stacks up against other options in Thailand.

Onetel
Local SIM card
Roaming
Uncapped data plans
Activates instantly
Your number stays the same
No surprise charges
No lock-in
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Southeast Asia eSIM

Cover the Region with Southeast Asia eSIM

Cover Thailand and every neighboring country on one regional eSIM — no SIM swaps, no extra fees. Starting at $2.16.

View Southeast Asia Plans
Internet restrictions illustration
Light Restrictions

Getting Online in Thailand

Thailand blocks adult content, gambling sites, and content deemed critical of the monarchy. Social media and messaging apps are freely accessible.

Adult Sites Political Websites Gambling

Services affected: Adult content, gambling sites, content critical of the monarchy

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eSIM costs for Thailand

Prices shown in USD

7 days of unlimited data in Thailand costs $31.78 — about $4.54 a day on AIS, TrueMove H or dtac, with no roaming charge and no SIM to swap. In Thailand, 5G is live and median mobile download speed is 41.3 Mbps.

Duration Price Daily cost
1 day $6.06 $6.06/day
3 days $14.78 $4.93/day
5 days $23.78 $4.76/day
7 days $31.78 $4.54/day
10 days $43.42 $4.34/day
15 days $63.56 $4.24/day
30 days $126.34 $4.21/day
180 days $64.00 $0.36/day
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Which Thailand eSIM plan fits your trip?

Choose your Thailand eSIM by matching the allowance and validity period to your trip, then compare the selected product details with the local network, band and speed references already shown on this page.

Start with the length of your stay, then allow for navigation, messaging, streaming and work use. Each option below is a plan size that is currently available for this destination.

Short trip

1 GB / 7 days

Best for: A short visit with maps, messages and occasional browsing.

This option pairs the 1 GB allowance with a stated validity period of 7 days.

Usage tip: Save maps before longer journeys and use Wi-Fi for large downloads.

Two-week trip

3 GB / 15 days

Best for: A stay of around two weeks with regular navigation and messaging.

The 3 GB allowance remains available across a stated validity period of 15 days.

Usage tip: Keep automatic app updates and cloud backups on Wi-Fi.

Longer or higher use

10 GB or more / 30 days

Best for: A longer stay or more frequent streaming, video calls or work use.

The 10 GB or more / 30 days profile provides a larger data pool than the short-trip options on this page.

Usage tip: Compare the allowance with your normal phone usage and monitor it during the trip.

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Which networks you connect to in Thailand

Your eSIM roams onto Thailand's own operators. These are the networks and the frequencies they run — check your phone supports them before you travel.

Operator 4G / LTE bands 5G bands 5G
AIS B1, B3, B8, B40 n28, n41, n258 Yes
TrueMove H B1, B3, B8, B40 n28, n41, n258 Yes
dtac B1, B3, B8, B40 n28, n41 Yes
41.3 Mbps
Median download
12.5 Mbps
Median upload

Source: Ookla Speedtest Global Index, Q2 2025

Coverage in Thailand

n258 (26 GHz mmWave) deployment is limited to dense urban areas and select venues; B40 (2300 MHz) is widely used for LTE but absent from many international phone models.

How to check mobile coverage in Thailand

The Thailand mobile network source is linked below as a public network reference. Check the places on your itinerary where the source offers local detail, then confirm the network information for the selected eSIM product. The operator table on this page provides the country-level reference, while the selected product details identify which network information applies to your plan.

Accommodation and daily stops

Check your accommodation and the places you expect to visit in Thailand. Indoor reception can differ from an outdoor map, so keep the property Wi-Fi details available as well.

Journeys between stops

Review the full route rather than checking only the arrival city. Save tickets, addresses and maps offline before longer road or rail journeys.

Borders and onward travel

Check the selected product scope for every country on your itinerary. Your Thailand plan and a regional plan may have different included destinations and validity periods.

Phone compatibility in Thailand

Compare your phone with 4G bands B1, B3, B8, B40 and 5G bands n28, n41, n258 in the existing Thailand network table. Support for more of the listed bands gives the phone more options when connecting, while the selected product, location and local network conditions determine the service available.

Set up the Thailand eSIM for your trip

Keep the QR code and installation instructions available offline, and complete each step according to the selected product's instructions.

When validity starts: Validity-start rules can differ by product. Check the selected plan details before installation and travel.

  1. Confirm that your phone is unlocked and supports eSIM before purchase.
  2. Save the QR code or manual installation details somewhere you can reach without mobile data.
  3. Use reliable Wi-Fi to install the profile at the time recommended in the product instructions.
  4. When you are ready to use it, select the travel eSIM for cellular data and apply the stated roaming and APN settings.
  5. Keep roaming disabled on your home line if you want to avoid using its travel data.
Network and coverage sources, checked 2026-10-10
Thailand travel guide

Navigating Thailand with Confidence

Thailand is a welcoming destination, but a few practical tools make travel smoother. Download the Grab app for reliable ride-hailing in Bangkok, Chiang Mai, and on Koh Samui. It works like familiar ride services and shows fares upfront. For communication, Google Translate handles Thai script and spoken phrases well, especially the camera translation feature for menus and signs.

In cities like Bangkok and Chiang Mai, traffic can be heavy during rush hours, so plan extra time. On the islands of Koh Lanta and Phi Phi, cash is king; ATMs are available but can run low. With these two apps and some small bills, you will move through Thailand with ease.

Five Essential Sights to Plan For

Thailand rewards visitors who choose quality over quantity. Here are five places worth your time.

  • Grand Palace & Wat Phra Kaew, Bangkok - The official residence of the monarchy. Dress modestly with covered shoulders and knees. The Emerald Buddha is a highlight.
  • Wat Arun, Bangkok - A striking temple with a distinctive Khmer-style prang. Best visited early morning to avoid crowds.
  • Chiang Mai Old City & Doi Suthep - Explore the old city walls and then head to Doi Suthep for a panoramic view. Avoid visiting on weekends when it gets busy.
  • Railay Beach, Krabi - Accessible only by boat from Krabi Town. Bring reef-safe sunscreen and water shoes for the rocky entry.
  • Ayutthaya Historical Park - The ancient capital’s ruins are impressive. Hire a bicycle to cover the large site efficiently.

From Bangkok's temples to the Andaman Sea, these sites represent Thailand's depth. Here, the Grand Palace and Wat Phra Kaew stand as Southeast Asia's most revered landmarks.

A Practical Guide to Thai Food

Thai food is lively and varied. Start with these five dishes that define the cuisine.

  • Pad Thai - Stir-fried rice noodles with shrimp, tofu, or chicken. Look for vendors with a steady line of locals.
  • Tom Yum Goong - Hot and sour shrimp soup. The version with coconut milk is milder. Beware the small bird's eye chilies.
  • Som Tam (Green Papaya Salad) - Shredded green papaya with chili, lime, and fish sauce. Intensely spicy; ask for mild if sensitive.
  • Massaman Curry - A mild, coconut-based curry from southern Thailand. Best with roti or rice.
  • Mango Sticky Rice (Khao Niao Mamuang) - A classic dessert. The mango should be ripe and sweet.

In Bangkok's street stalls and Chiang Mai's night bazaars, these dishes appear often. Always check for fresh ingredients. Khao Soi, a northern curry noodle soup, is another specialty worth seeking out.

When to Visit: Seasonality and Timing

Thailand has a tropical climate with three main seasons. The best time for most visitors is November through February. Temperatures are pleasant, humidity is low, and rainfall is minimal. This is peak season, so book accommodations and transport well in advance.

From March to May, the hot season arrives. Temperatures can exceed 40°C in Bangkok and the central plains. Coastal areas like Phuket and Koh Samui remain bearable. April brings Songkran, Thailand's New Year water festival, which is fun but chaotic.

The rainy season runs from June to October. While downpours are frequent, they are often brief. This period offers lower prices and fewer crowds. For northern destinations like Chiang Mai, the rains bring lush greenery. Avoid the islands of Koh Samui and Koh Lanta during full moons if you prefer quiet.

What to Pack for Thailand

Pack light and smart for Thailand's tropical climate.

  • Lightweight, breathable clothing - Cotton or linen shirts, loose trousers, and a light scarf for temple visits. Avoid heavy denim.
  • High-SPF sunscreen - The sun is strong year-round. Choose a reef-safe brand if you plan to swim.
  • Insect repellent - Essential for evenings and rural areas. Look for one with DEET or picaridin.
  • Reef-safe flip flops - For beaches and casual outings. Pack a pair of sturdy sandals for walking.
  • Small backpack or day bag - For carrying water, snacks, and a camera. A cross-body bag is also useful.
  • Your uPhone eSIM - Ensure your phone has a local or global eSIM for connectivity. Most cafes offer free Wi-Fi.

Pack a reusable water bottle with a filter to reduce plastic waste. Most hotels provide basic toiletries, but a small first-aid kit is wise for remote areas.

Common Questions

The details worth knowing about your Thailand eSIM

The eSIM connects to AIS, TrueMove H, and dtac. All three cover 4G on bands B1, B3, B8, B40 and 5G on n28 and n41. This means you get broad nationwide access, though mmWave 5G on n258 is limited to dense urban areas and select venues.

Band B40 (2300 MHz) is widely used for LTE in Thailand but absent from many international phone models. If your phone lacks B40, you may experience weaker coverage indoors or in rural areas. Check your device specs before travel.

No. The eSIM only provides coverage within Thailand's borders. Once you cross into Laos, Myanmar, Cambodia, or Malaysia, the connection stops. You would need a separate eSIM or roaming plan for those countries.

Data is not throttled or filtered beyond standard network management. You get full-speed access up to the plan limit. However, Thailand does block certain content by law, such as gambling sites, which may be inaccessible.

Coverage on major islands and in Chiang Mai city is strong thanks to AIS, TrueMove H, and dtac. However, remote mountain trails or small uninhabited islands may have weak or no signal, as networks concentrate on populated areas.

Compare 1 GB / 7 days, 3 GB / 15 days and 10 GB or more / 30 days. Use the shorter profiles for lighter maps and messaging use, then compare the larger allowance for streaming, video calls or work apps.

The start rule is product-specific. Review the selected plan details before installing it so you know whether any action is required before arrival.

Save the QR code, manual installation details, APN guidance and the support instructions supplied with the selected plan.
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